Turbine-motor.



'PATENTED JUNE 12, 1906.

N. W. FLETCHER. TURBINE MOTOR. APPLICATION FILED JAN. 3, 1905.

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N. W. FLETCHER. TURBINE MOTOR.

APPLICATION FILED JAN. 3, 1905.

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N. W FLETCHER.

TURBINE MOTOR.

- APPLI ATI N FILED JAN. 3, 1905.

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N. W. FLETCHER.

TURBINE MOTOR.v

APPLICATION FILED JAN. 3, 1905.

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LQQWW I No. 823,211.

PATENTED JUNE 12, 1906.

N. W. FLETCHER. TURBINE MOTOR.

APPLICATIONIILED JAN. 3, 1905.

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PATENTED JUNE 12, 1906.

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N. W. FLETCHER.

TURBINE MOTOR.

APPLICATION FILED JAIL s, 1905.

ZLiZfiJJfiS NATHAN IV. FLETCHER, OF CH'ICAG O HEIGHTS, ILLINOIS, ASSIGNOR TO TURBINE MOTOR TOOL COMPANY, OF" CHICAGO, ILLINOIS, A CORPO- RATION OF ILLINOIS.

TUR BlNE-MOTOR.

' Specification of Letters Patent.

Ltatented June 1.2, 1906.

Application filed January 3,1905. Serial No. 239,468.

To all whom it may concern:

Be it known that I, NATHAN W. FLETCHER, States, residing at Chicago Heights, in the county of Cook and State of Illinois, have invented certain new and useful Improvements'in Turbine-Motors and I do hereby'declare that the following is a full, clear and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon,. which form a part of this specification.

This invention relates to improvements in turbine engines or motors of that class in whichthe rotative part or member of the mo- 1' tor is provided with a series of annularlyarranged blades or buckets and the non-rotati've part or member thereofis provided with a delivery passage or passages operating to direct a jet or jets of air or other fluid against said blades or buckets.

The apparatus shown in the accompanying drawings as embodying my invention consists of a portable or hand .tool for cut, ting, polishing, or grinding and embracing a supporting-block or base-plate adapted to rest and slide upon the surface of the workor object to be operated upon and on which taken upon M34133 ofFig. 1.

is mounted-a rotative cutting, grinding, or polishing tool and a motor which drives the same.v

The invention consists in the matters hereinafter set forth, 'and more particularly pointed out in the appended claims.

As shown in the accompanyingdra'wings, Figure 1 is a view in side elevation of atool' provided with a turbine-motor constructedl in-accordance ith my invention, the tool being shown as provided with a cutting-tool 40 in the form offla' rotative saw; Fig. 2 is a plan view ther of. Fi 3 is a plan'sectioii Fig. 4 is a view of the base or supporting and the bearingsof the tool.- howing' the parts of the motdr in crosssecti'o pant-of the t'o o arbor thereof,

upon the 'indir ct line 4 4 of Fig. 2-. ig. 5- s f the machine, showin tiie same in thep sition in which it will be p ac when operati g upon a vertical surface. F'g 6 is an'enlar eddetail axial section of t motor, the s me being taken upon'thesection-line6 6 f Fig. 7. Fig. "7 is an enlarged vertical secti n of the motor, taken upon 1,1ne

7 7 of Fig. 6. Fig. 8 is a view in side elevation of the sliding governor-ring of the motor. Fig. 9 is a side elevation of the fixed ring by which the governor-ring is held from rotation. Fig. 10 is a side view of the ring shown in Fig. 9. Fig. 11 is a detail section taken upon line 11 11 of Fig. 10. Fig. 12 is a detail side elevation of the piston-val e bushing of the governor. Fig. 13 is a view in side elevation of the piston-valve, showing the parts which engage the same in section. Fig.'14 is a detail face view of the-sta frated from the other parts.

'As illustrated in said drawings, A designates the stationary or non-rotative body or J member of the motor which is of circular or f or wheel thereof, which has the general form of a flat disk and is provided at its periphery with a series of curved blades or buckets b b, which-project from the side face of the disk tached to a supplementary annular supporting-ring B, arranged parallel with and at some distance from the periphery of the wheel B. Said rotative member'B is, attached'to a central sleeve or hub B", which turns on a central bearing axle-or spindle C, secured in a central aperture in the body A and pro'ecting therefrom, 'so-as to afford a bearing'for the central sleeve or hub B Antifriction or ball bearings c c areshown as interposed between the ends of the sleeve B illustrated, in w "ch'the motor forms part of a hand or portable tool for cutting or grind- "is arranged to drive. a rotative tool as olthe base plate D. {Said also provided with an op osite y-eirtending. arm A, whichisad'apte' tobe ad ustably shown as 'formed integral with or in part by atube A which forms a supply-pipe by which air is supplied to the motor.

disk form,and B indicates the rotative inemb er and thefsaids indle C. In the machine 'lows: D indicates a flat elongatedbase plateportion A is secured to the standard D The arm A is ationary part or member of the motor sepatoward the stationary part'A and are at ing, the motor is sustained or supported :End

su orting-standa'rds D edgl ody art A'of the motor is lly extending arm A,

.roo ard D,'wh1'ch is located near. one end of E indicates a tool-carrying shaft or arbor, which is arranged parallel with the base-plate and mounted in a bearing attached to or sup- :portedrigidly from the non-rotative part or arbor E and is adapted to act on the work or ber B of the motor between said parts.

object to be operated upon against a flat face or surface on which the base-plate D rests and on which the tool as a whole slides or moves. Said arbor E is shown as mounted in a tubular hub or hearing F, which forms part of a supporting-bracket F, which is arranged generally parallel with the non-rotative body A of the motor and is connected at one end with the pivot-pin D", by which the body A is pivoted to the standard A, and at its opposite end is rigidly attached to the arm A by bolts f f, said bracket F being located at a distance from the disk A sufficient to give space or room for the rotative mem- The pivot-pin D is adapted to turn or rotate in a bearing-aperture in the upper end of the standard D and is rigidly attached at its ends to the arm A and bracket F by being inserted in split sockets a, and f, formed on the ends of said parts and provided with clamping-screws a and f by which the sockets may be firmly clamped on the ends of said pin. The pin D thus secured to the arm A and bracket F, serves to afford a rigid connection between said parts.

The standard D is provided with a curved I slot (1, concentric with the pivot-pin D and a clamping-screw 0 passes through said slot and engages the arm A for clamping said arm to the standard. To afford means for accurately adjusting the tool-spindle E relatively to the base-plate, an adj usting-screw G is inserted through a lug a on the arm A and is adapted to act against a shoulder 11 on the standard D The lug a is preferably split or severed to form two parts or arms, which extend at opposite sides of the screw G and are engaged by a set-screw a, Fig. 2, by which the adjusting-screw G may be clamped or held from movement when adjustedto a desired'positiom The bearing-sleeve F for the tool-arbor E is shown as provided with two separate roller-bearin s f f which engage the said arbor near t e ends of the same. The saw E is'attached to the'outer end of the arbor E, which projects outside of the bearing f said saw being located laterally outside of the adjacent side mar in of the base-plate D. Provision is made for driving the said arborE from the disk B of the motor, consisting of a gear-wheel E Fig. 4, attached to the inner end of the said arbor, anda gear-wheel E, which is secured to the end of the sleeve B which is extended outwardly past the outer and the passages 7L3 and J and thus balances the valve.

face of the disk B to receive said gear-wheel,

cate a grinding or polishing disk, which may be carried by the tool-arbor E instead of the saw illustrated.

Now referring to the arrangement of the parts by which the compressed air or pres: sure fluid is directed to and acts upon the buckets b of the rotative member or wheel B of the motor, these parts are made as follows: To'the inner face of the disk-shaped body A of the motor is secured a segmental nozzle-block H, Figs. 6, 7, and 14, which pro- .jects or extends within the annularly-arranged buckets b b of the disk B and has a curved outer face parallel with the periphery of said disk, so that said buckets move in a circular path outside of and adjacent to the curved outer surface of said nozzle-block. In said block H and opening through the said curved outer surface thereof are formed outlet-passages h h h", which are arranged ob liquely and at equal angles with respect to radial lines of the wheel and which are lo- The dotted lines E in Figs. 3 and 4 indiacted in a plane midway between the side margins of the buckets. Said passages are connected at their inner ends with supplypassages h 7L4 7?, which communicate with a transverse valve-chamber in the nozzleblock. On the outer face of the disk A is formed a supply-chamber A, which communicates with the valve-chamber in the nozzleblock and with which is connected the air supply pipe A which, as shown in the draw ings, is cast integral with and extends across the back of said disk A. A cylindric valve bushing I is fitted in the supply-chamber A*. In the part of said valve-bushing which passes throu h the airsupply chamber A are formed a p urality of air-inlet ports 'i i, i, said chamber enters bushing, in the part which is surrounded by the nozzle-block H, are formed three transverse slots, forming ports i i i which afford communication between the valve-chamber k W, leading to the outlet-passages h h 7%. Within the bushing is an endwise-movable piston-valve J, forming part of a speed governing or regulating dev1ce. part or piston J at its inner end, whichcoacts with the ports i i i to control the supply of air to the discharge-passages h h ht At its outer end'the piston-valve J has apiston J 2 which is connectedwithjthe piston J by a stem '3' and which slides in the ushmg I outside of the inle't-ports'iv i i. Pressure of the entering fluid acts equally Endwise movement of the piston-valve in a direction to carry the part J thereof wholly or partially over the ports i 01 a serves to parvalve-cliamber of the nozzle-block and extends through the Said piston-valve has an enlarged.

through which air from the bushing. In said on the pistons J -air to pass from the said valve-chamber to the outletassages. Mounte on the'cylindric hub B of the rotative. member of the motor adjacent to the disk B thereof is a governor-sleeve K, which hub.

is adapted to slide or move endwise on said The sleeve K turns with the hub and is provided with a circumferential groove 1a, which is engaged by a shoe L, attached rigidly, Figs. 6 and 18, to the pistonvalve J and extending inwardly in position for engagement with'said groove. ofth hub B .is a collar M, Figs. 3, 6, 9, and 10, which has screw-threaded engagement with the hub and is provided with guide-pins m m, which extend therefrom parallel with thehub and engage the sleeve K. Around the guideins m m are placed coiled springs N N, which are held in compression between the ring M and sleeve K and serve to hold the latter adjacent to the inner} surface of the disk B. The said sleeve K is also provided with a plurality of radiallyarran'ged'siots or recesses Mk k hating iii-- clinqd 0r oblique outer bearing-surfaces k k k Fig. 6. In the said recesses are located radially 'sliding wedgeshaped 1 governorweights 0 0, Figs. 6 and 8, having oblique bearing-faces 0, adapted to engage the bearing-surfaces k and provided with radial end bearing-surfaces 0, adapted to rest against and'slide inwardly and outwardly in contact with the adjacent flat face of the disk B. In the operation of these parts the weights 0 0 when thrown or moved radially outwaid by centrifugal action slide outward on the disk B, and their oblique margins, acting on the oblique bearing-surfaces of thesleeve K,-give inward movement to said sleeve against the action of the springs N N, and the shoe L andthe piston-valveJ are thereby moved in a direction to cut off the passage of air to the exit-passages h 71/ k The ring M has screwthreaded connection with the hub B, and by turning said ring on the hub the tension of the springs N N may be so regulated that the su p y of motor fluid .will bereduced or cut 0 at a greater orless speed of rotation in the motor, as desired. As a means of clam in the ring M on the screw-threaded end 0 the hub. B so as to hold said ring fr said ring is shown as provided with a circumferentially-extending sl-it or slot m, arranged parallel with the side faces of the ring, while the parallel parts of the ring at opposite sides of said slot are connected bya set-screw m so arranged that by tightening the screw said parallel parts will be drawn together. Maniestly the tightening of said screw m when the ring has been screwed to a desired place On the opposite end' guide-apertures k is in ply pipe A om movement when ad usted to a desired position,

on the hub will cause the separated or par: allel parts to bind on the screw-threads of the hub, and thereby' hold or clamp the ring from movement.

The exit-ports i i i are arranged in oflset relatioh to each other, Figs. 6 and 12, so that they will be covered and uncovered successively by the piston-valve J when the latter act by impact against the blades, is kept approximately constant, and the motor operates under the same conditio ns when running under a reduced as under a full supply of air.

The general operation of the motor hereinbefore described is like that of similar impact turbine-motors, the air or other fluid supplied under pressure passing through the supply-pipe A and chamber A, and then through the valve-bushing H and passages 71- h, and k to the exit-passages h h h The jets delivered-from said exit-passages at high velocity impinge on the concave faces of the blades or buckets, which change the direction of motion of the jets, and in so doing utilize practically all of the energy due to the high velocity of the jets. The governing or regulating device desclibed operates to prevent the rotative part of the motor from turning at a speed exceeding a safe or desirable maximum velocity when the motor is running under a light load or is doing no work.

The air-supply pipe A is shown in the accompanying drawings as having on its outer end a throttle-valve by which the supply of air to the motor may be cut OH .or controlled. Said throttle-valve is operated by a rotative sleeve or tubular hand-grip P. Said air-suphas at its outer end an enlarged externally-screw-threaded part, which is engaged by the screw threaded inner end of the sleeve P. In the outer part of said sleeve is a cylindric valve-casing P, attached to a tube P to which the supply 'hose is attached. The sleeve P has an inwardly-extending annular flange p at its outer end, which engages a groove 0 the tube P, so that said sleeve may turn on the casing. The casing P has at its inner end a wall or diaphragm in which is formed a circular outwardly-facing valve-seat. A valvedisk Q is located within. the casing P and fits on the valve-seat, said disk being attached to a stem Q, which slides at its outer end in a guide-aperture formed in a perforated wall p" at the inner end of the tube p The valvedisfi projects inwardly past the inner end wa o rmed by flanges on the casing p and the valve-casing and is adapted to bear on the central part of an open frame Q Fig.-

19, on the adjacent end of the supplyipe A A coiled spring Q surrounds the vavestem Q and is held in compression between the end wall p and the valve-disk Q, so that it tends to hold said disk pressed a ainst its seat. When the sleeve P is turned in a direction to screw it farther upon the end of the will be permitted to seat itself under the action of the spring Q and the valve will be closed.

The outer end of the supply-pipe A as well as of the extension thereof, which forms the arm A", are shown as offset from the plate A, so that they are located nearly over the longitudinal centerline of thebase-plate, the intermediate part of said supply-pipe being extended transversely of the motor between the disk B and the standard D as seen in Figs. 2 and 3.

In connection with the tubular sleeve P the tool illustrated isprovided with abrake for arresting the rotation of the disk B when the said sleeve is turned to out 01f the airsupply for stopping the motor, the samebeing constructed as follows; R indicates a.-

- brake-lever which is pivoted on the supplypipe A and the inner end of which isprovided with a,brake-shoe 1, adapted tobear onthe outer face of the disk B. Acoiled spring R,held in compression'between-the outenarm 1 of the lever B and the air-pipe A tends to hold the brake-shoe in contact with the .disk. The extremity of the lever R-has anoblique or cam surface r, which extends into a. roove or recess rfljiormed in. theiside of -t 0- en larged screwrthreaded end of the pipe A,

Fig. 3,- in such manner that the end of-the sleeve P bears against the obliquesurface These parts are so arranged that-whenthe sleeve P is screwed outwardly far enou h to permit the closing of thethrottle-valvet e.- brake-lever-will be'..released and the. brake shoe will be forced by theactuating-spri-ngi against the B. When,.- however; the sleeve 18 turned to open the throttlewalve, its.

inward movement-will by its-pressure onthe.

cam-surface-r :force the adjacent end of. the- 7 brake-lever inward and-relieve thepressure of I the brake-shoe on said disk. The rotative sleeve 1?. not-only forms a -means 0t opera-tingthe throttle-valve} but it "also constitutes .one of the zhandles'by which the machine is-grasp'ed by the opera-f tor' in handlin thesame. .A second handle St is preferably ocated; near, the. 0 posite end of the machine,- the same being V indicatesa shield or-cover, which surrounds or-c'oversthe periphery of thelwheelr own as at-.. tached to the .top of the standard D.

I or disk B and which has the form of a curved serted through an outwardly-extending longitudinal flange on said bracket.

The features of construction in thethrottle-valve and. brake hereinbefo're described constitute the subject of a separate applicationfor Letters Patent filed by me simultaneously herewith, Serial No. 239,469.

I claim as my invention 1. A turbine-motor comprising a rotative wheel or member having a series of annularlyarranged'blades or buckets, a non-rotative -member provided with a supply-passage and with a discharge-passage, a valve controlling said discharge-passage, said valve being located eccentrically with respect to the rotative wheel or member and adjacent to the blades orbuckets of the same, a valve-actuating member turnin with the rotative member of the motor an having operative con;

nection with the valve,..a.spring-applied to move said valve-actuatin member inone direction and a centrifugal y-act'in governorweight of wedge form which sli es radially on e-rotative member or wheel and acts on the-valve-actuating member to vinove same against the tension of said spring.

2. A turbine-motor comprisin a rotative wheel or member having aseries o annularlyarranged blades or buckets, a non-rotative member provided with a supply-passage and a discharge-passage and with a valve-chamber having a port communicating with said rlsaid valve-actuating memberm one direction,

- and -acentrifugally-acting governor-weight acting on-said valve-actuating member to move-the same against the tensionof said 'sprmg.

3. A turbine-motor comprising a rotative wheel or member having a series of annularlyarranged; blades or buckets,-a non-rotative member provided with a supply-passage,

with a discharge-passage and w t a valvechamber having a port communicating with- .said discharge-passage, said valve-chamber being-located eccentrically with respect to .the rotative wheel or member and adjacent to the blades orbuckets of ,the same, a valveactuating member to l piston in said valve-chamber, a valve-actuating member mounted on the rotative member ofthe motor and connected with said piston, a spring applied to move said valve-actuating mem er in one direction and v a, centrifugall actin governor weight of wedge form w 'ch sli es radially on said rotative Wheel or member and acts on said valvemove the same against the tenslon of said spring.

4. A turbine-motor comprising a rotative wheel or member having a series of annularlyarranged blades or buckets, a non-'rotative member rovided with a su l assa e, with a dis bharge-pa'ssage and it val echamber having a port communicating with said discharge-passage, said valve-chamber being located eccentrically of the rotative member or wheel and adjacent to said blades or buckets, a sliding valve-piston in said chamber arranged parallel with the central axis of the motor, a laterally-sliding valveactuating sleeve arranged concentrically with the central axis of 'the motor, a shoe attached to said piston. and engaging said sleeve, a spring acting on said sleeve to move the same in one direction, and a centrifugally-acting governor-weight acting .on' said sleeve against the tension of-said spring;

5. A turbine-motor comprisin a rotative wheel or member having a series 0 annularly-, arranged blades or buckets, a non-rotative member consisting of a plate rovided with a supply-passage,- a valve-blodk attached to sea plate and provided with a plurality of discharge-passages and with a valve-chamher having ports communicating with said dischargeassages, a cylindric valve-bushing exten ing through the said nozzle-block and through the said non-rotative member into. the said supplyassage, said valvebushin having a 'suppy-port. communicating wit the supply-pasfsa'ge and also having ports communicating with said dischargepassages, a sliding piston in the said bushing, and a centrifugallyacting governor-weight carried by the rotative member and actuating said valve-piston.

6. A turbine-motor comprising a rotative wheel or member having a central 'c'ylindric hub and a series of annularlyarranged blades or buckets, a non-rotative member provided with a su plyassage, with a discharge-passage an wit a valve-chamber aving a port communicating with said discharge-passage, a sliding valve-piston in said valve-chamber, a valve-actuating sleeve mounted to slide endwise on said hub of the rotative member and connected with said valve-piston, s rings applied to move said sleeve on the hub in one direction, and a centrifugally-aoting Wedge-sha ed weight adapted to slide radially on t erotative member and to act on said sleeve to move the same against the tension of said spring.

7. A turbine-motor comprising a rotative wheel or member having a central cylindric hub and a series of annularlyarranged blades or buckets, a non-rotative member provided with a supply-passage and with a discharge-passage, a valve controlling said discharge-passage, a valve-actuating sleeve mounted to slide endwise on said hub ofthe rotative member and connected with the said valve, a ring having screw-threaded engagement with said hub, guide-pins on said ring engaging the said valve actuating sleeve, springs interposed between said ring and sleeve and centrifugally-acting wedge shaped weights adapted to slide radially on the rotative member and to act on said sleeve to move the same against the tension of said springs.

8. A turbine-motor comprising a rotative wheel or member having a central cylindric hub and a series of annularlyarranged blades or buckets, a non-rotativel member provided with a supply bassage and with a discharge-passage, a valve controlling said discharge-passage, a valve-actuating s eeve mounted to slide endwise on said Hub 0 the rotative member and connected with the said valve, a ring having screw-threaded eng agement with said hub, guide-pins on said ring engaging the said valve -.-actuating sleeve, springs interposed between said ring and sleeve, and a centrifugally-acting, wedge-shaped weight adapted to slide radially on the rotative member and acting on said sleeve to move the same against the tension of said spring, and means for clamping the said ring to the hub.

9. A turbine-motor comprising a rotative wheel or member having a central cylindric hub and a series of annularly-arranged blades or buckets, a non-rotative member provided with a supply-passage, and with a dischargepassage, a valve controlling said dischargepassa e, a valve-actuating sleeve mounted to sli e en'dwise on said hub of the rotative member and 'connected with the said valvepiston, a ring having screw-threaded engagement with said hub, guide-pins on said ring engaging the said sleeve, centrifugally-acting, wedge-shaped weights adapted to slide radially on the rotative member and acting on said sleeve to move the same against the action of said spring, and means for clamping the said ring on the hub, embracing a longitudinal slit or slot in the said ring and a screw in the ring engaging the arts of the same at the opposite sides ofsai slot or slit.

In testimony that I claim the foregoing as my invention I affix my signature, in presence of two witnesses, this lgth'day of December,

' NATHAN W. FLETCHER.

Witnesses:

O. CLARENCE POOLE, GEORGE E. WILKINS 

